MacDon M155 Unloading And Assembly Instructions page 138

9. Press the HEADER UP switch (A) to raise header to
maximum height.
10. If one end of the header does NOT fully raise, rephase
the lift cylinders as follows:
a. Press and hold the HEADER UP switch until both
cylinders stop moving.
b. Continue to hold the switch for 3–4 seconds.
Cylinders are now phased.
NOTE:
It may be necessary to repeat this procedure if there is
air in the system.
11. Engage safety props on both lift cylinders as follows:
a. Stop engine and remove key from ignition.
b. Pull lever (A) and rotate towards the header to
release and lower safety prop (B) onto the lift
cylinder.
c. Repeat for opposite lift cylinder.
214298
ASSEMBLING THE WINDROWER
Figure 3.223: Ground Speed Lever
Figure 3.224: Safety Prop
126
Revision A